| Author: | Spiers, James. |
|---|---|
| Year: | 1931 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | C 22.11:6512 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6512 |
| Subject: | Gold mines and mining--California--Amador County |
| Link: | https://hdl.handle.net/2027/mdp.39015077576596 |